4 Written questions
3 Multiple choice questions
- Ivy leaf and pine needle
- they provide positional information in the embryo
- the homolog has evolved more slowly in mice.
3 True/False questions
Miller and Urey's experiments that attempted to recreate conditions on early Earth were significant because _____.
they showed how polymers could form spontaneously on a clay substrate
they showed that organic molecules such as amino acids could be produced from inorganic molecules
they showed how radiometric dating could be used to give the absolute ages of rocks and fossils
proved the endosymbiotic theory
they produced the first protocells → they showed that organic molecules such as amino acids could be produced from inorganic molecules
Radiometric dating _____.
allows us to determine an absolute, errorless date
only works on rocks younger than 75,000 years
allows us to indirectly date fossils up to billions of years old based on minerals in surrounding volcanic strata
relies on the fact that the daughter isotope decays to the parent isotope at a constant rate
can be used to directly date fossils in sedimentary rock → "tinkering" with existing structures
Phylogeny is the evolutionary history of related groups of organisms. Organisms are grouped into taxa based on homologous characteristics, shared traits that result from common ancestry. Which statement is true?
Homologous structures look the same and serve the same function, but they differ in evolutionary origin and structure.
The term "monophyletic" refers to a taxon that includes an ancestral species and all of its descendants.
Ancestral traits are always simpler than derived traits. → they provide positional information in the embryo